At wind farms located above 3000 meters in altitude, low temperatures pose the greatest challenge to the equipment.
The actual situation that the client has encountered is as follows: the same steel material performs stably in plain area projects, but in an environment of -30℃, some supporting components undergo brittle cracking.
The reason is not complicated: the toughness of steel significantly decreases with the drop in temperature. If the residual stress during the forming process is large, it will be amplified in extreme low temperatures.
This is why high-altitude projects place greater emphasis on stress control during the forming process, including whether the roller transition is reasonable and whether cutting will cause stress concentration.
What the client wants is not "how thick it can be formed", but: in a low-temperature environment, can the equipment ensure that the material's toughness does not fail prematurely?